Custom Software Development


We design, build, and maintain custom software applications for Australian enterprises. Our 100% onshore engineering teams are vendor-agnostic and focused on delivering secure, scalable, and working software every two weeks.

Engineering Rigour, Built in Australia


We don’t just write code; we solve complex business problems.


Whether you are building a greenfield product, modernising a legacy system, or integrating enterprise architectures, our 100% onshore teams deliver software that is secure, scalable, and built to last.


Key Differentiators: Vendor Agnostic, Technology Agnostic, Outcome Focused.

What We Build


We build across the entire digital spectrum, from customer-facing apps to the invisible glue that holds your enterprise together.

Web Apps & Portals

Scalable, secure, and user-centric


From high-traffic customer portals to complex internal dashboards, we build web applications that drive engagement and efficiency.



Explore Web Apps

Mobile Applications

Native performance, cross-platform speed.


Building iOS and Android experiences that users love, using modern frameworks like React Native and .NET MAUI to maximise code reuse without compromising quality.



Explore Mobile

Integrations & APIs

The glue of the enterprise.



Connect your disparate systems with robust, secure API architectures. We specialise in making legacy monoliths talk to modern cloud services.



Explore Integrations

AI & Emerging Tech

Beyond the hype.



Practical, production-ready AI implementations. From Large Language Model (LLM) integration to intelligent automation, we help you turn "magic" into business value.



Explore AI & Tech

Delivery Models Tailored to You


Every organisation is different. We adapt our engagement model to fit your maturity, timeline, and internal capability.

Embedded Teams

Need to scale fast? We drop a fully functional team (Devs, QAs, Product Owner) into your organisation to ship features immediately. 

Embedded Teams

Project Rescue

Software project off the rails? We specialise in forensic code analysis and vendor transitions to get you back on track. 

Project Rescue

App Modernisation

Don't rewrite; reimagine. We migrate legacy "brown-field" applications to the cloud with minimal disruption.

App Modernisation

The Patient Zero Way


Writing code is the easy part. Shipping working software to production, reliably, securely, and frequently, is where we excel.

Automated Testing Standards

We don't rely on "hope." Our teams implement rigorous automated testing frameworks (Unit, Integration, E2E) from Day 1.

CI/CD & DevOps

We ship early and often. Our continuous deployment pipelines ensure that your stakeholders can see working software at the end of every sprint.

Transparent Governance

Documentation is scarce, and you suspect the vendor holds the "keys to the kingdom" to prevent you from leaving.

Start Your Build


Whether you have a fully specced roadmap or just a 'back of the napkin' idea, we can help you take the next step.


We don't just write code; we validate your assumptions, architect for scale, and help you navigate the complexity of bringing a digital product to life. Let’s turn that concept into working software.

Engineering Insights


Patient Zero Co-CEO Demelza Green on stage at Gartner IT Symposium 2025, presenting on the risks of
December 15, 2025
Demelza Green & Paul Seymour at Gartner IT Symposium: Why AI isn't replacing developers, the "Hype Machine" risks, and how to verify top 1% talent.
By Joe Cooney September 25, 2025
Joe Cooney explains how to de-risk legacy system modernisation using synthetic data. Protect PII and improve test coverage without using production data.
A retro-futuristic illustration depicting two men in lab coats operating a large vintage computer.
By Alex Petrakis August 25, 2025
Thinking of migrating to GPT-5? Alex Petrakis uncovers the hidden token costs, latency issues, and reasoning unpredictability you need to know first.
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